Backpack improvement
Added support for 100 slots in the backpack
Backpack can now be sorted by type
Multi-selection in the backpack is now done by holding down the Ctrl key

Alt-fire on the Sandvich now drops sandviches
A single sandvich can be dropped at a time. Dropping the sandvich removes it from the Heavy
A Heavy can regain his sandvich by collecting a healthkit while already being at full health
Eating a sandvich using the taunt method now heals a Heavy to full health
Dropped sandviches heal 50% of the collector's health

Medic regen changes
Base regen amount increased from 1/sec to 3/sec
Regen amount increase since time of last damage decreased from 3x to 2x
End result of above: Old healing scaled from 1/sec to 3/sec based on time since being damaged (maxed out at 10 seconds). New healing scales from 3/sec to 6/sec

Blutsauger
Replaced "No critical hits" negative attribute with "-2 health drained per second on wearer"
Health drain stacks on top of the above Medic regen changes, lowering the base regen by 2h/sec

Added "mp_windifference" server ConVar (default to 0)
When set to X, matches will be considered won if a team gets X points ahead of the other team
Added a "Remember the active weapon between lives" option to the Multiplayer->Advanced options dialog
Added "Disable weather effects" option to the Multiplayer->Advanced options dialog
Added "Show non-standard items on spectated player" option to the Multiplayer->Advanced options dialog
If set (default), it'll show non-standard items being carried by the player you're spectating

Tournament mode changes
New item whitelist allowing tournaments to control what items can be used by players
Added "item_whitelist_example.t xt"
Added "item_show_whitelistable_ definitions" command to get a list of whitelistable items

Added Tournament mode Spectator HUD
Added "Use advanced spectator HUD in tournament mode" option to the Multiplayer->Advanced options dialog
Shows all the members of your team (or both if you're a spectator) at the top of the screen, along with class/health/respawn time/charge level
Spectator indices are now shown on the team members, and hitting the corresponding weapon selection key (slot1-slot12 commands) will spectate them

Changed idle player check to include spectators & players who haven't chosen a team